genus Daphnia

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Noun1.genus Daphnia - water fleas
arthropod genus - a genus of arthropods
Branchiopoda, subclass Branchiopoda - primitive aquatic mainly freshwater crustaceans: fairy shrimps; brine shrimps; tadpole shrimps; can shrimps; water fleas
daphnia, water flea - minute freshwater crustacean having a round body enclosed in a transparent shell; moves about like a flea by means of hairy branched antennae
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References in periodicals archive ?
It is generally accepted that the genus Daphnia is less diverse in the tropics than it is in north temperate regions (Fernando et al., 1987; Dussart, 1994).
The impact of ultraviolet radiation on the vertical distribution of zooplankton of the genus Daphnia. Nature, 412, 69-72.
The second instance of morphological alterations was found only in individuals of the genus Daphnia, which presented alterations of varied appearance, confined to the helmet and rostrum (Figure 2).
Mass development of cladocerans starts in June when they make up about 30% of the total zooplankton biomass; they dominate in biomass in July (mainly the genus Daphnia) and account for about 50% of biomass in the autumn months (genus Bosmina).
The genus Daphnia (Crustacea: Branchipoda) includes a diversity of species that are generalist grazers on plankton in freshwater lakes.